Oscae cohn



(No Model.)

OJ OOHN. I CLEANING DEVICE FOR TYPE WRITING MACHINES.

\ Patented July 5', 1892.

@CZ ZEZV WITNESSES floddwflxmfim UNITED STATES 3 PATENT 0 m.

OSCAR COHN, OF BRIDGEPORT, CONNECTICUT, ASSIGNOR TO MAX W.

- HENIUS, OF SAME PLACE.

CLEANI NG DEVICE FOR "I'YPE-WRITING MACHINES.

SPECIFICATION forming part of Letters Patent No. 478,406, dated Julyv 5,1892.

Application filed July 8, 1891. Serial No. 398,741- (No model.) I

To all whom it may concern.-

Be it known that I, OSCAR COHN, a citizen of the United States, residingat Bridgeport, in the county of Fairfield and State of Connecticut, haveinvented certain new and useful Improvements in Devices for CleaningType-Writing Machines; and I do hereby declare the following to be afull, clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame.

My invention has for its object to produce a simple, inexpensive, easilyoperated, and easily applied brush-tool for cleaning the types inwriting-machines. I am aware that various devices have been devised forthis purpose which for various reasons have not proved perfectlysatisfactory to the users, the essential requirements being that thedevice shall be capable of ready attachment and detachment, and willoperate quickly and thorough1y,whether the type are arranged in circularor oval form, and without danger of soiling the fingers of the operator.

With these ends inviewl have devised the novel brush-tool which I willnow describe, referring by numerals to the accompanying drawings,forming part of this specification, in which Figure 1 is an elevation ofmy novel brushtool complete and in operative position, a portion of theframe of a type-writer to which it is attached being shown in section,and opposite type-bars with types thereon being shown insubstantiallythe position they occupy in the machine; Fig. 2 .aviewshowing the manner in which the brush may be tilted over in order toplace it in operative position in certain machines; Fig. 3, a section onthe line w m in Fig. 1, looking down; and Fig. 4. is a section on theline y y in Fig. 1, looking down.

1 denotes a circular brush, which is carried by a shank 2 and rotates inthe horizontal plane.

As it is necessary in certain machines-for example, the Caligraphto tiltthe brush upward in order to place it in operative position within thetype-bars, I preferably provide the shank with a joint 3, over which asleeve 4 slides, the sleeve being provided with alug 5,

from which a chain 6 extends to the brush. When the sleeve is pusheddown, as in Fig. 1, it covers the joint and holds the brush 1n operativeposition. When the sleeve is moved up, however, as in Fig. 2, the jointis left uncovered and the chain swings the brush into nearly a verticalposition. The shank is oarried by an attaching-arm 7, the inner end ofwhich is bifurcated so as to embrace some portion of the frame of themachine, such portion of the machine being indicated in the presentinstance by 8.

9 denotes a thumb screw which passes through one of the branches and isthreaded to engage the other branch, so as to clamp said branchestightly about the frameof the machine, as shown in Fig. 1. The shankpasses through a hole 10 in attaching-arm 7, which is made larger thanthe shank, so as to permit vibratory or wabbling motion of the brush, aswill be more fully explained. The shank and brush are held in operativeposition by collars l1, placed, respectively, above and below theattaching-arm. The upper end of the shank consists of a crank 12, havingthe usual hand-piece 13.

I have only shown two of the type-bars of the machine, which areindicated by 14, the types at their lower ends being indicated by 15.

In use the brush is placed in operative position, as indicated in Fig.1, and if it has been tilted to place it there is turned into operativeposition and the joint covered by the sleeve. The attaching-arm isplaced over the portion of the machine to which it is to be attached andsecured there by the thumb-screw.

In use the operator simply turns a crank. A moments operation of thecrank, owing to the fact that the shank passes loosely through theattaching-arm, is amply sufficient to clean the entire set of types, asthe brush in addition to its rotary movement will have an oscillatorymovement, it being evident that when the pressure of the hand in turningthe crank forces it in any direction, the brush will be swung in theopposite direction and into contact with the types upon that sidewhether arranged in circular or oval form. In use, as a matter of fact,a portion of the brush passes over the face of each type, after whichthe brush passes to the next type, thus swmgmgaronndthe circle of typesandbrushing one type after the other and cleaning the whole of themperfectly.

Having thus described my invention, I cla1m- 1. A device for cleaningthe typeset writ- 1ng-machines when arranged 'in circular or oval form,consisting, essentially, of a suitable attaching-arm, a circularhorizontally-acting brush of less diameter than the distance be tween"the nearest types, ashank by which the brush is carried and which isloosely journaled 1n the attaching-arm, and means, as a crank, forturning theloosely-journaled shank so that 1n addition to its rotarymovement an oscillatory movement is imparted to the brush,whereby thebrush is brought successively in contact brush,a sleeve covering thejoint and connected to the brush so as to tilt it when the sleeve israised, and an attaching-arm in which the shank is loosely held, as andfor the purpose set forth.

In testimony whereof I at'fix my signature in presence of two witnesses.

OSCAR COHN.

Witnesses:

MAX W. I'IENIUS, A. M. VVOOSTER.

